/*
 * 
 * book: Head first java
 * page: 52
 * status: done;
 * */

public class CodeMagnets{
	public static void main (String[] args)
	{
		int x = 3;
		
		while (x>0)
		{
			if (x>2)
			{
				System.out.print("a");
				x=x-1;
				System.out.print("-");
				
			}
			if (x==2)
			{
				System.out.print("b c");
				x=x-1;
				System.out.print("-");
				
			}
			if (x==1)
			{
				System.out.print("d");
				x=x-1;
			}
		}	
	}
}